<template>
  <div>
    <nav-bar>
      <div slot="left" class="back" @click="backClick">
        <img src="~assets/img/common/back.svg" alt="">
      </div>
      <div slot="center" class="title">
        <div v-for="(item,index) in titles" :key="index" class="title-item" @click="titleClick(index)"
             :class="{active: index === currentIndex}">{{item}}
        </div>
      </div>
    </nav-bar>
  </div>
</template>

<script>
    import NavBar from "components/navbar/NavBar";

    export default {
        name: "DetailNavBar",
        components: {
            NavBar
        },
        data() {
            return {
                titles: ['商品', '参数', '评论', '推荐'],
                currentIndex: 0,
            }
        },
        methods: {
            titleClick(index) {
                this.currentIndex = index;
                this.$emit('titleClick', index);
            },
            backClick() {
                this.$router.go(-1);
            }
        }
    }
</script>

<style scoped>
  .title {
    display: flex;
    font-size: 13px;
  }

  .title-item {
    flex: 1;
  }

  .active {
    color: var(--color-tint);
  }
  .back img {
    margin-top: 13px;
  }
</style>
